A common question we always get asked. What is the envelop size and what number is it? The following is a chart for all of the sizes and applications.

Business & Correspondence

Widely used for business and personal correspondence. Commercial and Side Seam flap styles are ideal for machine insertion. Wallet flaps provide a large area ideal for imprinting. Square flaps are contemporary, but not recommended for machine insertion.

TYPE

SIZE

ENCLOSURE

6 1/4

3.5″ x 6″

3.25″ x 5.75″

6 3/4

3.625″ x 6.5″

3.5″ x 6.25″

8 5/8

3.625″ x 8.625″

3.5″ x 8.375″

7

3.75″ x 6.75″

3.5″ x 6.5″

Monarch (7 3/4)

3.875″ x 7.5″

3.75″ x 7.25″

9

3.875″ x 8.875″

3.75″ x 8.675″

9 (policy)

4″ x 9″

3.75″ x 8.5″

10

4.125″ x 9.5″

4″ x 9.25″

DL

4.313″ x 8.625″

4.125″ x 8.375″

11

4.5″ x 10.375″

4.25″ x 10.125″

12

4.75″ x 11″

4.5″ x 10.75″

14

5″ x 11.5″

4.75″ x 11.25″

16

6″ x 12″

5.75″ x 11.75″

Booklet

This style is ideal for annual reports, brochures, sales materials, and more. The open side makes it acceptable for automatic insertion.

TYPE

SIZE

ENCLOSURE

3

4.75″ x 6.5″

4.5″ x 6″

4 1/2

5.5″ x 7.5″

5.25″ x 7″

5

5.5″ x 8.125″

5.25″ x 7.625″

6

5.75″ x 8.875″

5.5″ x 8.375″

6 1/2

6″ x 9″

5.75″ x 9″

6 5/8

6″ x 9.5″

5.75″ x 9″

6 3/4

6.5″ x 9.5″

6.25″ x 9″

7 1/4

7″ x 10″

6.75″ x 9.5″

7 1/2

7.5″ x 10.5″

7.25″ x 10″

9

8.75″ x 11.5″

8.5″ x 11″

9 1/2

9″ x 12″

8.75″ x 11.5″

10

9.5″ x 12.625″

9.25″ x 12.125″

13

10″ x 13″

9.75″ x 12.5″

Catalog

Center seam makes this style more durable for mailing heavy-weight materials. These envelopes can not be processed through inserting equiptment or run through a laser printer.

Baronial

Deep pointed flap traditionally used for formal announcements and invitations. Not recommended for machine insertion.

TYPE

SIZE

ENCLOSURE

Professional*

2.125″ x 3.625″

2″ x 3.5″

#16 (Mrs.)*

2.375″ x 3.375″

2.25″ x 3.125″

#17 (Mr. & Mrs.)*

2.6875″ x 3.6875″

2.5625″ x 3.5625″

Gladstone*

3.563″ x 5.562″

3.375″ x 5.375″

4-Bar

3.625″ x 5.125″

3.475″ x 4.875″

5½-Bar

4.375″ x 5.75″

4.25″ x 5.5″

6-Bar/Walton Outside

4.75″ x 6.5″

4.625″ x 6.25″

Lee

5.25″ x 7.25″

5.125″ x 7″

Linwood/Monona Inside

5.25″” x 7.5″”

5″ x 7.25″

Monona Outside

5.5″ x 7.75″

5.25″ x 7.5″

* This size is too small to mail.

Announcement

Also called A-style, this contemporary design is idea for photographs, greeting cards, small booklets, and promotional pieces. Do not confuse the A-4 size with metric A4 paper, which fits into a DL size Commercial envelope.